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raduoprea
24,780 Pointswhat is the # when declaring a function and prefixing the parameter(s) with # ? ex func test(#testVar:String)
I forgot and I keep seeing functions with parameters declared like this in the tutorials. What is # for again?
1 Answer
Michael Reining
10,101 PointsThe # value has been removed from Swift when declaring functions. In the past, you used # so that the outside name when calling the function would be the same as the inside name of the variable.
Here is an example if you want the names to be different.
func test(outsideName insideName:String) {
print(insideName)
}
test(outsideName: "My String")
If you do not specify a name for the argument in the function, then it gets skipped when calling the function.
func test(variableName:String) {
print(variableName)
}
test("My String")
I hope that helps,
Mike
PS: Thanks to the awesome resources on Team Treehouse, I just launched my first app. :-)